<template>
  <div ref="root1">123123</div>
</template>

<script>
import { ref, onMounted } from 'vue'

export default {
  name: 'HelloWorld',
  props: {
    msg: String
  },
  mounted() {
    console.log(111)
  },
  setup() {
    const root1 = ref(null);

    onMounted(() => {
      console.log(root1.value);
    })

    return {
      root1
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h3 {
  margin: 40px 0 0;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>
